11581422 has 8 divisors (see below), whose sum is σ = 23162856. Its totient is φ = 3860472.

The previous prime is 11581421. The next prime is 11581429. The reversal of 11581422 is 22418511.

It is a sphenic number, since it is the product of 3 distinct primes.

11581422 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 11581392 and 11581401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11581421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965113 + ... + 965124.

It is an arithmetic number, because the mean of its divisors is an integer number (2895357).

Almost surely, 2^11581422 is an apocalyptic number.

11581422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11581422 is a wasteful number, since it uses less digits than its factorization.

11581422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930242.

The product of its digits is 640, while the sum is 24.

The square root of 11581422 is about 3403.1488360047. The cubic root of 11581422 is about 226.2493267381.

Adding to 11581422 its reverse (22418511), we get a palindrome (33999933).

The spelling of 11581422 in words is "eleven million, five hundred eighty-one thousand, four hundred twenty-two".